Geologic Conditions and Controlling Factors of CO2in the North Marginal Basins of South China Sea
Received date: 2009-04-16
Revised date: 2009-06-11
Online published: 2009-10-10
There are rich sources of CO2 in the marginal basins in the northern of the South China Sea. The genetic types are crustal original, crustal-mantle original,and volcano-mantle original one, due to geologic conditions and controlling factors. The different geologic conditions and controlling factors to the accumulation and migration of CO2 and oil gas among different areas result from the different geological settings and characteristics. Crustal original and crustal\|mantle original type are located at the Yinggehai basin of the northwest margin and controlled by the diapirs up-invasion and thick marine calcic sand shales. Volcano-mantle original type is most located at the Qiongdongnan basin of the northeast margin and the Pear River Delta. Furthermore, the accumulation and migration of CO2 and oil gas of these types of CO2 are controlled by the exhaustion of mantle magma and the transportation of discordogenic faults.
CHEN Qing-Gong, HE Zhen-Hua, SHU Meng, CHEN Xue-Fang, CHU Wei-Hai, HUANG Xia, JIANG Jian . Geologic Conditions and Controlling Factors of CO2in the North Marginal Basins of South China Sea[J]. Natural Gas Geoscience, 2009 , 20(5) : 720 -729 . DOI: 10.11764/j.issn.1672-1926.2009.05.720
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